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Finding the Fourth Proportional to 790,416, 1,090,774.08 and 432,720

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Solution

The fourth proportional to 790,416, 1,090,774.08 and 432,720 is: 597,153.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,416 : 1,090,774.08 = 432,720 : x
  2. Step 2: Convert to fraction form
    790,416/1,090,774.08 = 432,720/x
  3. Step 3: Cross multiply
    790,416x = 1,090,774.08 × 432,720
  4. Step 4: Simplify right side
    790,416x = 471,999,759,897.60
  5. Step 5: Solve for x
    x = 471,999,759,897.60/790,416
  6. Step 6: Final answer
    x = 597,153.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.